./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:36:43,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:36:43,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:36:43,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:36:43,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:36:43,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:36:43,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:36:43,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:36:43,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:36:43,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:36:43,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:36:43,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:36:43,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:36:43,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:36:43,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:36:43,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:36:43,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:36:43,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:36:43,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:36:43,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:36:43,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:36:43,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:36:43,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:36:43,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:36:43,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:36:43,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:36:43,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:36:43,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:36:43,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:36:43,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:36:43,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:36:43,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:36:43,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:36:43,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:36:43,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:36:43,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:36:43,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:36:43,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:36:43,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:36:43,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:36:43,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:36:43,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:36:43,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:36:43,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:36:43,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:36:43,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:36:43,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:36:43,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:36:43,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:36:43,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:36:43,789 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:36:43,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:36:43,790 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:36:43,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:36:43,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:36:43,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:36:43,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:36:43,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:36:43,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:36:43,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:36:43,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:36:43,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:36:43,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:36:43,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:36:43,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:36:43,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:36:43,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:43,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:36:43,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:36:43,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:36:43,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:36:43,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:36:43,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:36:43,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:36:43,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:36:43,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2022-10-17 10:36:44,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:36:44,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:36:44,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:36:44,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:36:44,086 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:36:44,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-10-17 10:36:44,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/data/66d532127/78f9e1e4cfb34eb38630ea6c7841ff95/FLAGb51bb1dad [2022-10-17 10:36:44,727 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:36:44,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-10-17 10:36:44,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/data/66d532127/78f9e1e4cfb34eb38630ea6c7841ff95/FLAGb51bb1dad [2022-10-17 10:36:44,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/data/66d532127/78f9e1e4cfb34eb38630ea6c7841ff95 [2022-10-17 10:36:44,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:36:44,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:36:44,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:44,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:36:44,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:36:44,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:44" (1/1) ... [2022-10-17 10:36:44,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7171c8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:44, skipping insertion in model container [2022-10-17 10:36:44,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:44" (1/1) ... [2022-10-17 10:36:44,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:36:45,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:45,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-10-17 10:36:45,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:45,553 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:36:45,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2022-10-17 10:36:45,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:45,682 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:36:45,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45 WrapperNode [2022-10-17 10:36:45,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:45,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:45,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:36:45,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:36:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,766 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-10-17 10:36:45,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:45,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:36:45,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:36:45,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:36:45,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:36:45,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:36:45,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:36:45,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:36:45,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (1/1) ... [2022-10-17 10:36:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:45,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:36:45,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:36:45,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2db504fc-e948-4dd5-a92d-a2d2225f1fe7/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:36:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-10-17 10:36:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-10-17 10:36:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-10-17 10:36:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-10-17 10:36:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-10-17 10:36:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:36:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:36:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:36:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:36:45,913 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:36:46,039 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:36:46,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:36:46,415 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:36:46,426 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:36:46,426 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:36:46,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:46 BoogieIcfgContainer [2022-10-17 10:36:46,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:36:46,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:36:46,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:36:46,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:36:46,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:36:44" (1/3) ... [2022-10-17 10:36:46,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c629c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:46, skipping insertion in model container [2022-10-17 10:36:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:45" (2/3) ... [2022-10-17 10:36:46,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c629c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:46, skipping insertion in model container [2022-10-17 10:36:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:46" (3/3) ... [2022-10-17 10:36:46,448 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-10-17 10:36:46,462 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:36:46,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:36:46,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-17 10:36:46,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:36:46,616 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:36:46,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2022-10-17 10:36:46,823 INFO L130 PetriNetUnfolder]: 5/164 cut-off events. [2022-10-17 10:36:46,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:36:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-10-17 10:36:46,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 167 transitions, 349 flow [2022-10-17 10:36:46,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 164 transitions, 337 flow [2022-10-17 10:36:46,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:36:46,864 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2871ef61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:36:46,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-10-17 10:36:46,896 INFO L130 PetriNetUnfolder]: 1/115 cut-off events. [2022-10-17 10:36:46,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:36:46,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:46,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:46,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:36:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1404558984, now seen corresponding path program 1 times [2022-10-17 10:36:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:46,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129498728] [2022-10-17 10:36:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:47,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129498728] [2022-10-17 10:36:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129498728] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:47,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:47,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:36:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023884780] [2022-10-17 10:36:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:36:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:36:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:36:47,790 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-10-17 10:36:47,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:47,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-10-17 10:36:47,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:49,107 INFO L130 PetriNetUnfolder]: 1049/3556 cut-off events. [2022-10-17 10:36:49,107 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-10-17 10:36:49,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 3556 events. 1049/3556 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 33674 event pairs, 294 based on Foata normal form. 502/3885 useless extension candidates. Maximal degree in co-relation 5235. Up to 818 conditions per place. [2022-10-17 10:36:49,155 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 96 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2022-10-17 10:36:49,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 789 flow [2022-10-17 10:36:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:36:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:36:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2371 transitions. [2022-10-17 10:36:49,177 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8873502994011976 [2022-10-17 10:36:49,178 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2371 transitions. [2022-10-17 10:36:49,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2371 transitions. [2022-10-17 10:36:49,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:49,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2371 transitions. [2022-10-17 10:36:49,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.1875) internal successors, (2371), 16 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,210 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,212 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 337 flow. Second operand 16 states and 2371 transitions. [2022-10-17 10:36:49,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 789 flow [2022-10-17 10:36:49,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 772 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:36:49,223 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 432 flow [2022-10-17 10:36:49,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-10-17 10:36:49,230 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 13 predicate places. [2022-10-17 10:36:49,230 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 432 flow [2022-10-17 10:36:49,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:49,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:49,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:36:49,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:36:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1253064817, now seen corresponding path program 1 times [2022-10-17 10:36:49,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846354567] [2022-10-17 10:36:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:49,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846354567] [2022-10-17 10:36:49,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846354567] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:49,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:49,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:36:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475080720] [2022-10-17 10:36:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:36:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:36:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:36:49,717 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2022-10-17 10:36:49,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:49,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2022-10-17 10:36:49,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:51,873 INFO L130 PetriNetUnfolder]: 2875/8300 cut-off events. [2022-10-17 10:36:51,874 INFO L131 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2022-10-17 10:36:51,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14921 conditions, 8300 events. 2875/8300 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 87899 event pairs, 569 based on Foata normal form. 0/7965 useless extension candidates. Maximal degree in co-relation 14862. Up to 1817 conditions per place. [2022-10-17 10:36:52,009 INFO L137 encePairwiseOnDemand]: 153/167 looper letters, 108 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2022-10-17 10:36:52,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 313 transitions, 1259 flow [2022-10-17 10:36:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:36:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:36:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-10-17 10:36:52,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8379491017964071 [2022-10-17 10:36:52,018 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-10-17 10:36:52,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-10-17 10:36:52,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:52,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-10-17 10:36:52,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:52,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:52,041 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:52,041 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 432 flow. Second operand 16 states and 2239 transitions. [2022-10-17 10:36:52,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 313 transitions, 1259 flow [2022-10-17 10:36:52,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 313 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:36:52,085 INFO L231 Difference]: Finished difference. Result has 201 places, 242 transitions, 936 flow [2022-10-17 10:36:52,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=936, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2022-10-17 10:36:52,086 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 32 predicate places. [2022-10-17 10:36:52,086 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 936 flow [2022-10-17 10:36:52,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:52,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:52,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:36:52,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:36:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1700488748, now seen corresponding path program 1 times [2022-10-17 10:36:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342159867] [2022-10-17 10:36:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:52,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342159867] [2022-10-17 10:36:52,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342159867] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:52,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:52,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:36:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660701036] [2022-10-17 10:36:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:52,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:36:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:36:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:36:52,462 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-10-17 10:36:52,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:52,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:52,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-10-17 10:36:52,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:57,167 INFO L130 PetriNetUnfolder]: 5834/22499 cut-off events. [2022-10-17 10:36:57,167 INFO L131 PetriNetUnfolder]: For 13189/13404 co-relation queries the response was YES. [2022-10-17 10:36:57,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43949 conditions, 22499 events. 5834/22499 cut-off events. For 13189/13404 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 306919 event pairs, 1723 based on Foata normal form. 0/21197 useless extension candidates. Maximal degree in co-relation 43886. Up to 4887 conditions per place. [2022-10-17 10:36:57,499 INFO L137 encePairwiseOnDemand]: 157/167 looper letters, 166 selfloop transitions, 227 changer transitions 54/603 dead transitions. [2022-10-17 10:36:57,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 603 transitions, 4140 flow [2022-10-17 10:36:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:36:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:36:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2316 transitions. [2022-10-17 10:36:57,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8667664670658682 [2022-10-17 10:36:57,508 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2316 transitions. [2022-10-17 10:36:57,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2316 transitions. [2022-10-17 10:36:57,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:57,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2316 transitions. [2022-10-17 10:36:57,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 144.75) internal successors, (2316), 16 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:57,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:57,526 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:57,526 INFO L175 Difference]: Start difference. First operand has 201 places, 242 transitions, 936 flow. Second operand 16 states and 2316 transitions. [2022-10-17 10:36:57,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 603 transitions, 4140 flow [2022-10-17 10:36:58,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 603 transitions, 4138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:36:58,134 INFO L231 Difference]: Finished difference. Result has 223 places, 469 transitions, 3493 flow [2022-10-17 10:36:58,135 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3493, PETRI_PLACES=223, PETRI_TRANSITIONS=469} [2022-10-17 10:36:58,137 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 54 predicate places. [2022-10-17 10:36:58,138 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 469 transitions, 3493 flow [2022-10-17 10:36:58,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:58,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:58,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:58,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:36:58,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:36:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -685021039, now seen corresponding path program 1 times [2022-10-17 10:36:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:58,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641088367] [2022-10-17 10:36:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:58,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641088367] [2022-10-17 10:36:58,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641088367] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:36:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752358516] [2022-10-17 10:36:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:36:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:58,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:36:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:36:58,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 167 [2022-10-17 10:36:58,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 469 transitions, 3493 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:58,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:58,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 167 [2022-10-17 10:36:58,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:37:03,232 INFO L130 PetriNetUnfolder]: 4456/24930 cut-off events. [2022-10-17 10:37:03,233 INFO L131 PetriNetUnfolder]: For 7906/7911 co-relation queries the response was YES. [2022-10-17 10:37:03,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 24930 events. 4456/24930 cut-off events. For 7906/7911 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 367269 event pairs, 1362 based on Foata normal form. 700/25215 useless extension candidates. Maximal degree in co-relation 44548. Up to 5167 conditions per place. [2022-10-17 10:37:03,572 INFO L137 encePairwiseOnDemand]: 154/167 looper letters, 25 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2022-10-17 10:37:03,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 362 transitions, 2389 flow [2022-10-17 10:37:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:37:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:37:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-10-17 10:37:03,575 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8882235528942116 [2022-10-17 10:37:03,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-10-17 10:37:03,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-10-17 10:37:03,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:37:03,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-10-17 10:37:03,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:03,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:03,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:03,581 INFO L175 Difference]: Start difference. First operand has 223 places, 469 transitions, 3493 flow. Second operand 3 states and 445 transitions. [2022-10-17 10:37:03,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 362 transitions, 2389 flow [2022-10-17 10:37:04,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 362 transitions, 2387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:37:04,294 INFO L231 Difference]: Finished difference. Result has 225 places, 357 transitions, 2352 flow [2022-10-17 10:37:04,295 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2352, PETRI_PLACES=225, PETRI_TRANSITIONS=357} [2022-10-17 10:37:04,296 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, 56 predicate places. [2022-10-17 10:37:04,296 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 357 transitions, 2352 flow [2022-10-17 10:37:04,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:04,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:37:04,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:37:04,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:37:04,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:37:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1913673872, now seen corresponding path program 1 times [2022-10-17 10:37:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:04,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257300835] [2022-10-17 10:37:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:37:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257300835] [2022-10-17 10:37:04,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257300835] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:04,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:04,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:37:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981676532] [2022-10-17 10:37:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:04,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:37:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:37:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:37:04,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-10-17 10:37:04,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 357 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:04,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:37:04,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-10-17 10:37:04,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:37:15,154 INFO L130 PetriNetUnfolder]: 11813/53518 cut-off events. [2022-10-17 10:37:15,154 INFO L131 PetriNetUnfolder]: For 26435/27591 co-relation queries the response was YES. [2022-10-17 10:37:15,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109902 conditions, 53518 events. 11813/53518 cut-off events. For 26435/27591 co-relation queries the response was YES. Maximal size of possible extension queue 2047. Compared 840063 event pairs, 3257 based on Foata normal form. 442/52433 useless extension candidates. Maximal degree in co-relation 109828. Up to 8791 conditions per place. [2022-10-17 10:37:15,945 INFO L137 encePairwiseOnDemand]: 158/167 looper letters, 114 selfloop transitions, 200 changer transitions 0/475 dead transitions. [2022-10-17 10:37:15,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 475 transitions, 3645 flow [2022-10-17 10:37:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:37:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-10-17 10:37:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2014 transitions. [2022-10-17 10:37:15,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8614200171086399 [2022-10-17 10:37:15,954 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2014 transitions. [2022-10-17 10:37:15,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2014 transitions. [2022-10-17 10:37:15,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:37:15,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2014 transitions. [2022-10-17 10:37:15,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.85714285714286) internal successors, (2014), 14 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:15,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:15,973 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:15,974 INFO L175 Difference]: Start difference. First operand has 225 places, 357 transitions, 2352 flow. Second operand 14 states and 2014 transitions. [2022-10-17 10:37:15,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 475 transitions, 3645 flow